Fix 66212: some accessibility/tab order/focus stuff. r=timeless sr=alecf

suite/common/search/search-panel.xul

@@ -97,7 +97,8 @@
               sortDirection="ascending" sortActive="true"
               flex="1" datasources="rdf:internetsearch"
               onclick="if (event.button == 1 && event.target.localName == 'treecell')
-                         sidebarOpenURL(event.target.parentNode.parentNode);">
+                         sidebarOpenURL(event.target.parentNode.parentNode);"
+              style="-moz-user-focus:ignore !important;">
 
           <template>